<template>
    <div>
        <div style="width: 500px">
            <el-input
                    placeholder="请输入部门名称"
                    v-model="filterText"
                    prefix-icon="el-icon-search" v-focus>
            </el-input>

            <el-tree
                    :data="deps"
                    :props="defaultProps" :expand-on-click-node="false"
                    :filter-node-method="filterNode"
                    ref="tree">
                <span class="custom-tree-node" slot-scope="{ node, data }" style="display: flex;justify-content: space-between;width: 100%">
                    <span>{{ node.label }}</span>
                    <span>
                      <el-button
                              type="primary"
                              size="mini"class="depBtn"
                              @click="() => showAddDepView(data)">
                        添加部门
                      </el-button>
                      <el-button
                              type="danger"
                              size="mini" class="depBtn"
                              @click="() => deleteDepdata(data)">
                        删除部门
                      </el-button>
                    </span>
                </span>
            </el-tree>
        </div>

        <el-dialog
                title="添加部门"
                :visible.sync="dialogVisible"
                width="30%"
                >
            <div>
                <table>
                    <tr>
                        <td><el-tag>上级部门</el-tag></td>
                        <td>{{pname}}</td>
                    </tr>
                    <tr>
                        <td> <el-tag>部门名称</el-tag></td>
                        <td> <el-input v-model="addDep.name" placeholder="请输入部门名称"></el-input></td>
                    </tr>
                </table>
            </div>

            <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="doAddDep">确 定</el-button>
  </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "DepMana",
        data(){
            return {
                filterText : "",
                defaultProps: {
                    children: 'children',
                    label: 'name'
                },
                deps:[],
                dialogVisible:false,
                addDep:{
                    name:'',
                    parentId:-1
                },
                pname:''
            }
        },
        mounted(){
            this.initDeps();
        },
        watch: {
            filterText(val) {
                this.$refs.tree.filter(val);
            }
        },
        methods: {
            addDep2Deps(deps,dep){
                for(let i = 0;i<deps.length;i++){
                    let d = deps[i];
                    if(d.id == dep.parentId){
                        d.children = d.children.concat(dep);
                        if( d.children.length > 0){
                            d.isParent = true;
                        }
                        return;
                    }else{
                        this.addDep2Deps(d.children,dep);
                    }
                }
            },
            doAddDep(){
              this.postRequest('/api/system/basic/department/',this.addDep).then(resp=>{
                  console.log(resp);
                  if(resp){
                     // this.initDeps();
                      this.addDep2Deps(this.deps,resp.obj);
                      this.addDep.name='';
                      this.dialogVisible=false;

                  }
              })
            },
            filterNode(value, data) {
                if (!value) return true;
                return data.name.indexOf(value) !== -1;
            },
            initDeps(){
                this.getRequest('/api/system/basic/department/').then(resp=>{
                    this.deps = resp;
                })
            },
            showAddDepView(data){
                console.log(data);
                this.dialogVisible=true;
                this.pname=data.name;
                this.addDep.parentId = data.id;
            },
            removeDepFromDeps(p,deps,id){
                for(let i = 0;i<deps.length;i++){
                    let d = deps[i];
                    if(d.id == id){
                        deps.splice(i,1);
                        if(deps.length == 0){
                            p.isParent = false;
                        }
                        return;
                    }else{
                        this.removeDepFromDeps(d,d.children,id);
                    }
                }
            },
            deleteDepdata(data){
                console.log(data);
                if(data.isParent){
                  this.$message.error("父部门删除失败")
                }else {
                    this.$confirm('此操作将永久删除该【' + data.name + '】部门, 是否继续?', '提示', {
                        confirmButtonText: '确定',
                        cancelButtonText: '取消',
                        type: 'error'
                    }).then(() => {
                        this.deleteRequest('/api/system/basic/department/' + data.id).then(resp => {
                            if (resp) {
                              this.removeDepFromDeps(null,this.deps,data.id);
                            }
                        })
                    }).catch(() => {
                        this.$message({
                            type: 'success',
                            message: '已取消删除'
                        });
                    });
                }
           }
        },
    }
</script>

<style scoped>

    .depBtn {
        padding: 2px;
    }
</style>